Man arrested after fatally shooting intruder who entered his home, tried to assault him. But prosecutors refuse to file murder charges, declare self-defense.

St. Louis police were called to the scene of a shooting around 11:30 p.m. Monday, and when they arrived at a residence in the 4500 block of Alcott Avenue, they found a man suffering from gunshot wounds near the home's entrance, the St. Louis Post-Dispatch reported.

The wounded man was taken to a hospital where he was pronounced dead, the paper said.

Soon after police found a 40-year-old man they believed was the shooter, and he had a gunshot wound to his hand courtesy of his own gun, the Post-Dispatch added.

What happened next?
Police told the paper the shooter was in stable condition, and that he said the now-deceased man entered his home and attempted to assault him.